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Herwig++  2.7.0
Herwig::FFMassiveKinematics Class Reference

FFMassiveKinematics implements massive splittings off a final-final dipole. More...

#include <FFMassiveKinematics.h>

Inheritance diagram for Herwig::FFMassiveKinematics:

List of all members.

Public Member Functions

virtual pair< double, double > kappaSupport (const DipoleSplittingInfo &dIndex) const
 Return the boundaries in between the evolution variable random number is to be sampled; the lower cuoff is assumed to correspond to the infrared cutoff.
virtual pair< double, double > xiSupport (const DipoleSplittingInfo &dIndex) const
 Return the boundaries in between the momentum fraction random number is to be sampled.
virtual pair< double, double > zBoundaries (Energy, const DipoleSplittingInfo &, const DipoleSplittingKernel &) const
 Return the boundaries on the momentum fraction.
virtual Energy dipoleScale (const Lorentz5Momentum &pEmitter, const Lorentz5Momentum &pSpectator) const
 Return the dipole scale associated to the given pair of emitter and spectator.
virtual Energy ptMax (Energy dScale, double emX, double specX, const DipoleIndex &ind, const DipoleSplittingKernel &split) const
 Return the maximum pt for the given dipole scale.
virtual Energy QMax (Energy dScale, double emX, double specX, const DipoleIndex &dIndex, const DipoleSplittingKernel &split) const
 Return the maximum virtuality for the given dipole scale.
virtual Energy PtFromQ (Energy scale, const DipoleSplittingInfo &) const
 Return the pt given a virtuality.
virtual Energy QFromPt (Energy scale, const DipoleSplittingInfo &) const
 Return the virtuality given a pt.
virtual double ptToRandom (Energy pt, Energy dScale, double emX, double specX, const DipoleIndex &dIndex, const DipoleSplittingKernel &split) const
 Return the random number associated to the given pt.
virtual bool generateSplitting (double kappa, double xi, double phi, DipoleSplittingInfo &dIndex, const DipoleSplittingKernel &split)
 Generate splitting variables given three random numbers and the momentum fractions of the emitter and spectator.
virtual void generateKinematics (const Lorentz5Momentum &pEmitter, const Lorentz5Momentum &pSpectator, const DipoleSplittingInfo &dInfo)
 Generate the full kinematics given emitter and spectator momentum and a previously completeted DipoleSplittingInfo object.
template<class T >
double rootOfKallen (T a, T b, T c) const
 Triangular / Kallen function.
ThreeVector< double > rotateToZ (Lorentz5Momentum &pTarget, Lorentz5Momentum &p1)
 Perform a rotation on both momenta such that the first one will point along the (positive) z axis.
Standard constructors and destructors.
 FFMassiveKinematics ()
 The default constructor.
virtual ~FFMassiveKinematics ()
 The destructor.
Functions used by the persistent I/O system.
void persistentOutput (PersistentOStream &os) const
 Function used to write out object persistently.
void persistentInput (PersistentIStream &is, int version)
 Function used to read in object persistently.

Static Public Member Functions

static void Init ()
 The standard Init function used to initialize the interfaces.

Protected Member Functions

Clone Methods.
virtual IBPtr clone () const
 Make a simple clone of this object.
virtual IBPtr fullclone () const
 Make a clone of this object, possibly modifying the cloned object to make it sane.

Private Member Functions

FFMassiveKinematicsoperator= (const FFMassiveKinematics &)
 The assignment operator is private and must never be called.

Static Private Attributes

static ClassDescription
< FFMassiveKinematics
initFFMassiveKinematics
 The static object used to initialize the description of this class.

Detailed Description

FFMassiveKinematics implements massive splittings off a final-final dipole.

Author:
Simon Platzer

Definition at line 29 of file FFMassiveKinematics.h.


Member Function Documentation

virtual IBPtr Herwig::FFMassiveKinematics::clone ( ) const [protected, virtual]

Make a simple clone of this object.

Returns:
a pointer to the new object.

Implements ThePEG::InterfacedBase.

virtual Energy Herwig::FFMassiveKinematics::dipoleScale ( const Lorentz5Momentum &  pEmitter,
const Lorentz5Momentum &  pSpectator 
) const [virtual]

Return the dipole scale associated to the given pair of emitter and spectator.

This should be the invariant mass or absolute value final/final or initial/initial and the absolute value of the momentum transfer for intial/final or final/initial dipoles.

Reimplemented from Herwig::DipoleSplittingKinematics.

virtual IBPtr Herwig::FFMassiveKinematics::fullclone ( ) const [protected, virtual]

Make a clone of this object, possibly modifying the cloned object to make it sane.

Returns:
a pointer to the new object.

Reimplemented from ThePEG::InterfacedBase.

virtual bool Herwig::FFMassiveKinematics::generateSplitting ( double  kappa,
double  xi,
double  phi,
DipoleSplittingInfo dIndex,
const DipoleSplittingKernel split 
) [virtual]

Generate splitting variables given three random numbers and the momentum fractions of the emitter and spectator.

Return true on success.

Implements Herwig::DipoleSplittingKinematics.

static void Herwig::FFMassiveKinematics::Init ( ) [static]

The standard Init function used to initialize the interfaces.

Called exactly once for each class by the class description system before the main function starts or when this class is dynamically loaded.

Reimplemented from Herwig::DipoleSplittingKinematics.

FFMassiveKinematics& Herwig::FFMassiveKinematics::operator= ( const FFMassiveKinematics ) [private]

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

Function used to read in object persistently.

Parameters:
isthe persistent input stream read from.
versionthe version number of the object when written.

Reimplemented from Herwig::DipoleSplittingKinematics.

Function used to write out object persistently.

Parameters:
osthe persistent output stream written to.

Reimplemented from Herwig::DipoleSplittingKinematics.

ThreeVector<double> Herwig::FFMassiveKinematics::rotateToZ ( Lorentz5Momentum &  pTarget,
Lorentz5Momentum &  p1 
) [inline]

Perform a rotation on both momenta such that the first one will point along the (positive) z axis.

Rotate back to the original reference frame by applying rotateUz(returnedVector) to each momentum.

Definition at line 148 of file FFMassiveKinematics.h.

References sqr(), sqrt(), ThePEG::ThreeVector< Value >::unit(), ThePEG::ThreeVector< Value >::x(), ThePEG::ThreeVector< Value >::y(), and ThePEG::ThreeVector< Value >::z().


Member Data Documentation

The static object used to initialize the description of this class.

Indicates that this is a concrete class with persistent data.

Definition at line 214 of file FFMassiveKinematics.h.


The documentation for this class was generated from the following file: